OBD Guide

C0281

EBCM Detects Open Or Shorted Brake Switch Or Circuit

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–89 (est.)

Symptoms

  • Brake lights don't work
  • Incorrect operation of ABS or ESP
  • Disabling cruise control
  • Check Engine light comes on

Causes

  • Open or shorted wiring harness
  • Brake light switch malfunction
  • Oxidation or damage to connectors
  • Problems with the brake control module (EBCM)

How to Fix

  1. Check the integrity of the wiring harness
  2. Test the brake light switch
  3. Clean or replace connectors
  4. Check EBCM operation
  5. Replace faulty components

Related codes

Error C0281 by Vehicle Brand